heatmap | Python module to create heatmaps | Download Utils library
kandi X-RAY | heatmap Summary
kandi X-RAY | heatmap Summary
Python module to create heatmaps. See for details.
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- Compute heatmap .
- Initialize the heatmap .
- Save the heatmap to disk .
- Compute the bounds for a set of points .
- Runs build_ext .
- Return a list of valid schemes .
heatmap Key Features
heatmap Examples and Code Snippets
Community Discussions
Trending Discussions on heatmap
QUESTION
The below 2D numpy array represents a surface height. From any given cell in this matrix, I wish to find the cells which can be reached through continually moving away either flat (same height) or downhill (lower height). We can think of this as modelling where a ball could possibly roll if it is not allowed to roll back up any slope on the other side (no matter how small). Note the area to the left of the heatmap - it is lower than the target square but a trek uphill is still required to get there.
...ANSWER
Answered 2022-Mar-27 at 12:57This is a path finding problem. It can be solved using a BFS (with a filtering on the explored neighbours regarding the heights of the source/destination cells). Some package like python-pathfinding may help you to do that. If you plan to implement this your self, note that you can speed it up using Numba (or Cython) since direct indexing in pure-Python is slow. This is certainly faster than using an existing package regarding your constraints.
Note that if you plan to do this on all cells, then I think there are faster algorithm based on drainage basins that can do that in (quasi-) linear time (in two passes). Doing a BFS would not be efficient in that case because of the re-computation of most cells.
QUESTION
I am trying to run the example of a heatmap from: https://matplotlib.org/stable/gallery/images_contours_and_fields/image_annotated_heatmap.html
When I am running the code in PyCharm (Professional) in an Anaconda3 environment it results in an error message.
...TypeError: set_ticks() got an unexpected keyword argument 'labels'
ANSWER
Answered 2022-Jan-24 at 13:33There is no need to update matplotlib version if you are using version of matplotlib 3.4.3.
Here is the link for matplotlib 3.4.3 documentation and avoid using labels keyword in ax.set_xticks()
function as said by JohnC
QUESTION
How do you size the axes of a marginal plot to match the size of a non-square central plot using matplotlib?
In the image, you'll see that the top marginal plot is too wide, even though it shares the x-axis labels.
Context: I'm trying to create a joint plot like in Seaborn, but with a non-square heatmap at center and bar graphs as the marginal plots. JointGrids isn't designed to work with heatmaps (which is okay, on to matplotlib!). Merging a matplotlib heatmap with subplot barplots gets me close, but I find one bargraph's axis is larger than the central heatmap even when I share axes.
Minimum working example:
...ANSWER
Answered 2022-Feb-15 at 01:17As the heatmap gets a default "equal" aspect ratio, and gets shrunk due to the colorbar, an idea is to manually resize the histograms once everything is created.
QUESTION
I was wondering whether someone could help me with this: I want to set the widths of individual columns in a ggplot2 geom_tile heatmap to distinct values.
...ANSWER
Answered 2022-Feb-14 at 20:28geom_tile()
has a width
argument you can use to programmatically set the width. But you have to be careful because the labels will end up in funny places if you're not explicit about where to put them. Therefore I pre-calculate the position of each label based on the specified widths. Here you also have to know the order you want these columns in so they appear correctly.
QUESTION
I have a problem... I created the following navbar:
...ANSWER
Answered 2021-Dec-10 at 14:11First of all, if you want only 1 item selected at a time, then use instead of
.
You are using the general sibling combinator ~
:
The general sibling combinator (~) separates two selectors and matches all iterations of the second element, that are following the first element (though not necessarily immediately), and are children of the same parent element.
If you want to change the color of the label
associated with a radio, you need to place the radio before its label
.
It can be done with a single rule :
QUESTION
I have this issue with heatmap from seaborn. I don't know how, but seaborn.heatmap() refuses to take in dataframe, it instead show the mentioned error. Seaborn, matplotlib and pandas is up-to-date and I'm using python 3.10 on Visual Studio. The code is just a sample code from seaborn.heatmap itself:
...ANSWER
Answered 2021-Dec-05 at 09:37QUESTION
My problem is similar to the one encountered on this topic: Change heatmap's yticks for multi-index dataframe
I would like to have yticks every 6 months, with them being the index of my dataframe. But I can't manage to make it work.
The issue is that my dataframe is 13500*290 and the answer given in the link takes a long time and doesn't really work (see image below).
This is an example of my code without the solution from the link, this part works fine for me:
...ANSWER
Answered 2021-Nov-29 at 07:40Here are a couple ways to adapt that link for your use case (1 label per 6 months):
Either: Show an empty string except on Jan 1 and Jul 1 (i.e., when
%m%d
evals to0101
or0701
)
QUESTION
How can I make the lines for the x- and y-axes thicker in Julia Plots? Is there a simple way to achieve this?
MWE:
...ANSWER
Answered 2021-Nov-28 at 20:42Currently, there does not seem to be an attribute for axes thickness in Plots.jl.
As a workaround, you may use the attribute thickness_scaling
, which will scale the thickness of everything: lines, grid lines, axes lines, etc. Since you only want to change the thickness of axes, you need to scale down the others. Here is your example code doing that using pyplot backend.
QUESTION
Consider the matrix:
...ANSWER
Answered 2021-Nov-16 at 06:16Change group_df
to a factor and specifying annotation_colors
will work.
QUESTION
In my very simple case I would like to display the heatmap of the points in the points
GeoJSON file but not on the geographic density (lat, long). In the points
file each point has a confidence
property (a value from 0 to 1), how to display the heatmap on this parameter? weight=points.confidence
don't seem to work.
for exemple:
...ANSWER
Answered 2021-Nov-01 at 09:44- using your sample data for points
- these points are in Saudi Arabia, so assumed that polygons are regional boundaries in Saudi Arabia. Downloaded this from http://www.naturalearthdata.com/downloads/10m-cultural-vectors/
- polygon data is a shape file
- loaded into geopandas to allow interface to GEOJSON
__geo__interface
- dynamically filtered this to Saudi using pandas
.loc
- loaded into geopandas to allow interface to GEOJSON
- confidence data is just a straight https://plotly.com/python/mapbox-density-heatmaps/
- boundaries are https://plotly.com/python/mapbox-layers/
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Install heatmap
You can use heatmap like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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